Shaft-furnace for coking and gasifying coal.



SHAFT-FURNACE .FOR COKING AND Grit.SXFZING COAL.

Application filed June 19, 912.

fri

1o alt 017mm t may concern.'

lle it known that l, JOHANN Lii'rz, a citizen of the German Empire, and resident ol lhedeney, near Essen on the Ruhr, Germany. have invented certain new and useful lniproreinents in Sln\tt-l*`ur1nices for Coliing and (iasiil'ying Coal, ot' which the following' a specilication.

My invention relates to a slnrt't-furnace 'l'or ooking and gasit'ying coal, having an exterior and an interior heating system.

rlhis `furnace comprises a Vertical cokeoven wherein the oven proper has an annular section and is surrounded on the outside by heating lues and surrounds similar lines adjacent to its interior. This a 'ri igenient has the advjintage that the eolie-oven can be given a great height, so that the oven not only has a greater capacity but also produces a denser coke. A further advantage arises in that the coke-oren may be readily incorporated in the outer framework of a coaltower or athanor, so that charging wagons are unnecessary and the coal may be directly 'ted troni the hopper in the tower into the colte-oren. The coal above the cover of the o'ven niay in this way forni a gas-tight joint at the top of the coke-oven. These col eovens can be built both as recuperative as well as regenerative ovens. The combustion air for the inner heating lues can therefore be preliminarily heated by devices located in the inner portion of the oven, while the devices tor preliminarily heating the air for the outer heating lues can be located, when the ovens are built alongside of one another, in the intervening spaces between the ovens. rlube recupeii'ators are preferably employed, by way ot example, for preliminarily heating the air which are vertically arranged both 'within the oven itselic and also in its upper ta pcred portion. ln order'to further utilize the heat of the issuing coinlnistion gases, they are preferably led, after having given a portion of their heat to the air in the tube recuperator, through a further tube recuperator in which the remaining heat is given up to the combustion gas.

The lower end oit' the annular coke oven is formed by an annular bottom, which has an upwardly tapering section and slides over the interior portion oit the oven. This bottom is renderer gas-tight either by stuiing-box or by a water-joint. @n the bottom being lowered, water is admitted to a pipe and in powerful ets is inwardly directed therefrom Specification. of Letters Patent.

lllatented Dee. tft, tutti. Serial No, Wfl-,597.

against the descending coke-calie- By this .means the colte-cake is split up, and the coke being thus quenched is thereupon taken away on a eonveyer belt. The heating 'Hues can be arranged in known .manner to extend directly upward.

(lne illustrative embodiment oi my invention is represented by way ot example in the accompanying drawings, wherein:

Figure l is a sectional elevation ot the coke-oven. Fig. i; a sectional plan ot the same, Fig. 3 is a sectional detail riew ot one torni ol annular bottoni, F 4 is a similar view ot another forni et bottom.

ln these drawings the combustion gases are by way ot' example passed through tube recuperators. The Acoke-oven. (t has an annular cross-section and is hea-eyed by means ot' the/outer heating lines a Aid the inner heating-lines c. The products of conibustion from .the inner lines pass through the tubes Z ot' the tube recuperator in the interior olf the ovein and the products oticonibustion -frorn the outer lines through the tubes c to the recuperators located outside the oyen. The combustion air, entering .troni the culvert f, passes into the spaces g/ or the duets 75 before reaching the burnernozzles tor the heating tlues, and this air becomes heated in known manner by the issuing combustion gases moving in tubes d. The ascending air passes upward and outward from the tops ot the spaces g to the bottom of the inner tlues cby suitable canals. rlhe products of combustion issue from the tops of the inner tlues c to the top of the tube d, and downwardly to the outlet. rlllhe lower end of the oven is closed' by means of the annular upwardly tapering bottom 2', arranged to be slidable on the center portion ot the oven and rendered gas-'tight therefrom either by a water box Z. (Fig. 4,.) 0n the bottom being lowered a ji owerful stream of water from the water-pipe mis directed inwardly against the coke-cake, the latter being thus broken in pieces` and the coke formed is then carriedv away on the conveyer belt n. rlhe bottoni z' of the oven is preferably supported by hydraulic means.

The'entire oven built within the outer iron framework ot a coal-tower or athanor whose vertical supports o may for example be oit ahollow forni in order to carry away the discharged steam. The coal can be ted Afrom the hopper y) ofth'e coal-tower di joint 7; or a stutlingaol A rectly into the coke-oven lated mass,

' coal contained therein is resisted by the inwardly directed pressure due to the mass of l ashes.

I have described one embodiment of my invention, but it is lclear that numerous changes could be made in the details thereof without departing from its spirit as defined -by the itollowing claims:

I claim :V

1. A coke-oven having a vertical cokingchamber offI annular cross-section, vertical heating-dues' at'the inner side of said chamber, and. vertical heating-fines at the outer side of said vhaimber, said inner and outer fines bein` independent of each other.

42. A co e-oven having a vertical cokingchamber of annular cross-section, a vertically-movable bottom for said chamber, having an outwardly downwardly inclined upper face, and an interior downwardlyprojecting-shell, and a Water-seal inclosing said shell.

3. A coke-oven having a vertical cokingchamber of annular cross-section, vertical heating-lines at the inner side of said chamber, vertical heating-fines at the outer side 'of said chamber, heating devices, said inner and outer lues being independent of each` other, a core, and Aa Verticallymovable bottorn for said wiring-chamber, guided on and secured gas-tight to said core.

4. A cokeoven having a vertical coltingchamber of annular cross-section, vertical heating-fines at the inner side of said chainber, vertical heating-fines at the outer side of said chamber, heating devices, said inner and outer iiues being independent of each other, a core at the center of the oven, and means in said core for preliininarily heating; the air for combustion in the inner heating lines.

5. A coke-oven comprisingr a tower havin;r hollow supporting posts, a coking-chamber withinsaid tower, said cohingrhaniber be ing of annular cross-section, vertical heating-fines at the inner side ot said chamber, vertical heating flues at the outer side ot said chamber, and heating devices for said flues, said inner tlues being;r independent of the outer flues, pits below the coliing-cha1n-` ber, and coi'iduits connecting:r the pits with the hollow posts of the tower.

6. A coke-oven :oinprising a tower having posts, and an exterior wall therebetween, a vertical, annular shell within the tower wall, heating-fines, at the inner side ot the shell, heating-lilies at the outer side of' the core, the space between said shell and core forining a coking-chainber, heating devices, and a iilling of boiler ashes in the space between the exterior wall and the shell.

In testimony', that I claim the foregoing as my invention, have signed my naine in presence of two subscribing witnesses.

JOHANN LUTZ. [L s] Witnesses v HELEN NUFER, Anouar Nonna. 

